Dial *140# select 2 ( Recharge me ) then enter the number of the recipient to recharge your credit.
This will send a “Recharge Me” SMS to any prepaid or postpaid Almadar number. The recipient will get a text, “You have received a recharge request from XXXXXXX”
Almadar gives 3 free SMS for “Call me back”.
This service is free and there is no set up cost.